New Journal of Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
La effectively promotes propylene production over Ga/ZSM-5 catalyst in CO 2 -ODHP.
Язык: Английский
New Journal of Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
La effectively promotes propylene production over Ga/ZSM-5 catalyst in CO 2 -ODHP.
Язык: Английский
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 8, 2024
Abstract The oxidative dehydrogenation of propane using CO 2 (CO ‐ODH) technology has broad application prospects in the production propylene and utilization , development efficient ‐ODH catalysts is great significance. However, it remains a challenge to develop highly catalyst that can activate both C─H C═O. Herein, PtZn/Co@S‐1 with very low precious metal content 0.2 wt.% reported. Benefiting from PtZn 4 nanoclusters dispersed on surface Silicalite‐1 zeolite tetrahedrally coordinated Co 2+ framework via relay catalysis, independent dual sites structure (PtZn/Co@S‐1) greatly promotes reaction high conversion rate C 3 H 8 (59.7%) (44.3%), selectivity 94.9%, thus upsetting equilibrium for direct propane. Experimental measurements density functional theory calculations suggest interfaces are likely carbon dioxide hydrogenation active respectively.
Язык: Английский
Процитировано
3Molecular Catalysis, Год журнала: 2025, Номер 579, С. 115044 - 115044
Опубликована: Март 27, 2025
Язык: Английский
Процитировано
0Industrial Crops and Products, Год журнала: 2025, Номер 228, С. 120913 - 120913
Опубликована: Март 31, 2025
Язык: Английский
Процитировано
0Journal of the American Chemical Society, Год журнала: 2025, Номер unknown
Опубликована: Апрель 11, 2025
Propene, used on a large scale to manufacture polypropylene and several commodity chemicals, is increasingly produced by catalytic propane dehydrogenation (PDH). Atomically dispersed Pt has emerged as promising candidate catalyst for PDH; however, stabilizing atomically at high temperatures challenging. Here, we demonstrate the use of dealuminated zeolite beta with Fe content host isolated Pt, which anchored strongly support Pt-Fe bonds. The sites exhibit PDH performance, including apparent forward rate coefficient propene formation (404.8-26.4 mol propene/mol Pt·bar·s) selectivity (≥96%) 823 K in presence H2. Kinetics data characterizing range loadings show that catalyzes rates independent H2 partial pressure, whereas metallic clusters, formed loadings, catalyze reaction slightly negative dependence pressure. shift speciation loading, confirmed infrared spectroscopy adsorbed CO, X-ray absorption spectroscopy, high-angle angular dark field scanning transmission electron microscopy, suggests observed change kinetics dispersion consequence mechanism.
Язык: Английский
Процитировано
0New Journal of Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
La effectively promotes propylene production over Ga/ZSM-5 catalyst in CO 2 -ODHP.
Язык: Английский
Процитировано
0